Mexico City is the capital city of Mexico. It is the most important economic, industrial and cultural center in the country, and the most populous city with 8,836,045 inhabitants in 2008. Greater Mexico City incorporates 59 adjacent municipalities of Mexico State and 1 municipality of the state of Hidalgo, according to the most recent definition agreed upon by the federal and state governments. In the last national census (2005) Greater Mexico City had a population of 19.2 million people, making it the largest metropolitan area in the western hemisphere and the third largest in the world by population. The estimated population for the Metropolitan Area is 19,826,918 as of 2008. Mexico City is also the Federal District. The Federal District is coextensive with Mexico City: both are governed by a single institution and are constitutionally considered to be the same entity. This has not always been the case. The Federal District, created in 1824, was integrated by several municipalities, one of which was the municipality of Mexico City. As the city began to grow, it engulfed all other municipalities into one large urban area. In 1928, all municipalities within the Federal District were abolished, an action that left a vacuum in the legal status of Mexico City vis-à-vis the Federal District, even though for most practical purposes they were traditionally considered to be the same entity. In 1993, to end the sterile discussions about whether one concept had engulfed the other, or if any of the two entities had any existence in lieu of the other, the 44th Article of the Constitution of Mexico was reformed to clearly state that Mexico City is the Federal District, seat of the Powers of the Union and capital of the United Mexican States. Mexico City is located in the Valley of Mexico, also called the Valley of Anáhuac, a large valley in the high plateaus at the center of Mexico, at an altitude of 2,240 meters (7,349 ft). It was originally built by the Aztecs in 1325 on an island of Lake Texcoco.

Infomercial Format

Infomercials are long-format television commercials, typically five minutes or longer. The distribution of Infomercials is via paid programming. This phenomenon started in the United States where infomercials typically shown overnight --outside of peak hours. Some television stations chose to air infomercials as an alternative to the former practice of sign-off. By 2009, most US infomercial spending is during early morning, daytime, and evening hours. Stations in most countries around the world have instituted similar media structures. Over $150 billion of consumer products in the U.S. sold through infomercials. Infomercial is sometimes misapplied and used to refer to direct response television advertisements of 60 to 120 seconds in length. However, the term describes program length advertisements. In the US, they are typically 28 minutes and 30 seconds in length. In the US, DRTV advertisements of 30 seconds to 2 minutes in length are typically called "short form" or "DRTV spots" and are not included in the advertising industry's use of the term "infomercial". Note that in the US market, a small amount of media can be purchased for 5 minutes length advertisements, although this time is quite limited. Outside of the US market, lengths depend on the lengths allowed by television stations and government regulators. Infomercial was originally applied only to television advertising; it is now sometimes used to refer to any presentation with a significant amount of information in an actual, or perceived, attempt to persuade to a point of view. When used this way, the term may be meant to carry an implication that the party making the communication is exaggerating truths or hiding important facts. Often, it is unclear whether the actual presentation fits this definition because the term is used in an attempt to dis-credit the presentation. In this way, political speeches may be derogatorily referred to as "infomercials" for a specific point of view.